xref: /openbmc/qemu/ui/console.c (revision e1fe50dc)
1 /*
2  * QEMU graphical console
3  *
4  * Copyright (c) 2004 Fabrice Bellard
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a copy
7  * of this software and associated documentation files (the "Software"), to deal
8  * in the Software without restriction, including without limitation the rights
9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  * copies of the Software, and to permit persons to whom the Software is
11  * furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 #include "qemu-common.h"
25 #include "ui/console.h"
26 #include "qemu/timer.h"
27 #include "qmp-commands.h"
28 #include "sysemu/char.h"
29 
30 //#define DEBUG_CONSOLE
31 #define DEFAULT_BACKSCROLL 512
32 #define MAX_CONSOLES 12
33 #define CONSOLE_CURSOR_PERIOD 500
34 
35 typedef struct TextAttributes {
36     uint8_t fgcol:4;
37     uint8_t bgcol:4;
38     uint8_t bold:1;
39     uint8_t uline:1;
40     uint8_t blink:1;
41     uint8_t invers:1;
42     uint8_t unvisible:1;
43 } TextAttributes;
44 
45 typedef struct TextCell {
46     uint8_t ch;
47     TextAttributes t_attrib;
48 } TextCell;
49 
50 #define MAX_ESC_PARAMS 3
51 
52 enum TTYState {
53     TTY_STATE_NORM,
54     TTY_STATE_ESC,
55     TTY_STATE_CSI,
56 };
57 
58 typedef struct QEMUFIFO {
59     uint8_t *buf;
60     int buf_size;
61     int count, wptr, rptr;
62 } QEMUFIFO;
63 
64 static int qemu_fifo_write(QEMUFIFO *f, const uint8_t *buf, int len1)
65 {
66     int l, len;
67 
68     l = f->buf_size - f->count;
69     if (len1 > l)
70         len1 = l;
71     len = len1;
72     while (len > 0) {
73         l = f->buf_size - f->wptr;
74         if (l > len)
75             l = len;
76         memcpy(f->buf + f->wptr, buf, l);
77         f->wptr += l;
78         if (f->wptr >= f->buf_size)
79             f->wptr = 0;
80         buf += l;
81         len -= l;
82     }
83     f->count += len1;
84     return len1;
85 }
86 
87 static int qemu_fifo_read(QEMUFIFO *f, uint8_t *buf, int len1)
88 {
89     int l, len;
90 
91     if (len1 > f->count)
92         len1 = f->count;
93     len = len1;
94     while (len > 0) {
95         l = f->buf_size - f->rptr;
96         if (l > len)
97             l = len;
98         memcpy(buf, f->buf + f->rptr, l);
99         f->rptr += l;
100         if (f->rptr >= f->buf_size)
101             f->rptr = 0;
102         buf += l;
103         len -= l;
104     }
105     f->count -= len1;
106     return len1;
107 }
108 
109 typedef enum {
110     GRAPHIC_CONSOLE,
111     TEXT_CONSOLE,
112     TEXT_CONSOLE_FIXED_SIZE
113 } console_type_t;
114 
115 struct QemuConsole {
116     int index;
117     console_type_t console_type;
118     DisplayState *ds;
119     DisplaySurface *surface;
120     int dcls;
121 
122     /* Graphic console state.  */
123     const GraphicHwOps *hw_ops;
124     void *hw;
125 
126     /* Text console state */
127     int width;
128     int height;
129     int total_height;
130     int backscroll_height;
131     int x, y;
132     int x_saved, y_saved;
133     int y_displayed;
134     int y_base;
135     TextAttributes t_attrib_default; /* default text attributes */
136     TextAttributes t_attrib; /* currently active text attributes */
137     TextCell *cells;
138     int text_x[2], text_y[2], cursor_invalidate;
139     int echo;
140     bool cursor_visible_phase;
141     QEMUTimer *cursor_timer;
142 
143     int update_x0;
144     int update_y0;
145     int update_x1;
146     int update_y1;
147 
148     enum TTYState state;
149     int esc_params[MAX_ESC_PARAMS];
150     int nb_esc_params;
151 
152     CharDriverState *chr;
153     /* fifo for key pressed */
154     QEMUFIFO out_fifo;
155     uint8_t out_fifo_buf[16];
156     QEMUTimer *kbd_timer;
157 };
158 
159 struct DisplayState {
160     struct QEMUTimer *gui_timer;
161     uint64_t last_update;
162     uint64_t update_interval;
163     bool refreshing;
164     bool have_gfx;
165     bool have_text;
166 
167     QLIST_HEAD(, DisplayChangeListener) listeners;
168 };
169 
170 static DisplayState *display_state;
171 static QemuConsole *active_console;
172 static QemuConsole *consoles[MAX_CONSOLES];
173 static int nb_consoles = 0;
174 
175 static void text_console_do_init(CharDriverState *chr, DisplayState *ds);
176 static void dpy_refresh(DisplayState *s);
177 
178 static void gui_update(void *opaque)
179 {
180     uint64_t interval = GUI_REFRESH_INTERVAL_IDLE;
181     uint64_t dcl_interval;
182     DisplayState *ds = opaque;
183     DisplayChangeListener *dcl;
184     int i;
185 
186     ds->refreshing = true;
187     dpy_refresh(ds);
188     ds->refreshing = false;
189 
190     QLIST_FOREACH(dcl, &ds->listeners, next) {
191         dcl_interval = dcl->update_interval ?
192             dcl->update_interval : GUI_REFRESH_INTERVAL_DEFAULT;
193         if (interval > dcl_interval) {
194             interval = dcl_interval;
195         }
196     }
197     if (ds->update_interval != interval) {
198         ds->update_interval = interval;
199         for (i = 0; i < nb_consoles; i++) {
200             if (consoles[i]->hw_ops->update_interval) {
201                 consoles[i]->hw_ops->update_interval(consoles[i]->hw, interval);
202             }
203         }
204         trace_console_refresh(interval);
205     }
206     ds->last_update = qemu_get_clock_ms(rt_clock);
207     qemu_mod_timer(ds->gui_timer, ds->last_update + interval);
208 }
209 
210 static void gui_setup_refresh(DisplayState *ds)
211 {
212     DisplayChangeListener *dcl;
213     bool need_timer = false;
214     bool have_gfx = false;
215     bool have_text = false;
216 
217     QLIST_FOREACH(dcl, &ds->listeners, next) {
218         if (dcl->ops->dpy_refresh != NULL) {
219             need_timer = true;
220         }
221         if (dcl->ops->dpy_gfx_update != NULL) {
222             have_gfx = true;
223         }
224         if (dcl->ops->dpy_text_update != NULL) {
225             have_text = true;
226         }
227     }
228 
229     if (need_timer && ds->gui_timer == NULL) {
230         ds->gui_timer = qemu_new_timer_ms(rt_clock, gui_update, ds);
231         qemu_mod_timer(ds->gui_timer, qemu_get_clock_ms(rt_clock));
232     }
233     if (!need_timer && ds->gui_timer != NULL) {
234         qemu_del_timer(ds->gui_timer);
235         qemu_free_timer(ds->gui_timer);
236         ds->gui_timer = NULL;
237     }
238 
239     ds->have_gfx = have_gfx;
240     ds->have_text = have_text;
241 }
242 
243 void graphic_hw_update(QemuConsole *con)
244 {
245     if (!con) {
246         con = active_console;
247     }
248     if (con && con->hw_ops->gfx_update) {
249         con->hw_ops->gfx_update(con->hw);
250     }
251 }
252 
253 void graphic_hw_invalidate(QemuConsole *con)
254 {
255     if (!con) {
256         con = active_console;
257     }
258     if (con && con->hw_ops->invalidate) {
259         con->hw_ops->invalidate(con->hw);
260     }
261 }
262 
263 static void ppm_save(const char *filename, struct DisplaySurface *ds,
264                      Error **errp)
265 {
266     int width = pixman_image_get_width(ds->image);
267     int height = pixman_image_get_height(ds->image);
268     FILE *f;
269     int y;
270     int ret;
271     pixman_image_t *linebuf;
272 
273     trace_ppm_save(filename, ds);
274     f = fopen(filename, "wb");
275     if (!f) {
276         error_setg(errp, "failed to open file '%s': %s", filename,
277                    strerror(errno));
278         return;
279     }
280     ret = fprintf(f, "P6\n%d %d\n%d\n", width, height, 255);
281     if (ret < 0) {
282         linebuf = NULL;
283         goto write_err;
284     }
285     linebuf = qemu_pixman_linebuf_create(PIXMAN_BE_r8g8b8, width);
286     for (y = 0; y < height; y++) {
287         qemu_pixman_linebuf_fill(linebuf, ds->image, width, 0, y);
288         clearerr(f);
289         ret = fwrite(pixman_image_get_data(linebuf), 1,
290                      pixman_image_get_stride(linebuf), f);
291         (void)ret;
292         if (ferror(f)) {
293             goto write_err;
294         }
295     }
296 
297 out:
298     qemu_pixman_image_unref(linebuf);
299     fclose(f);
300     return;
301 
302 write_err:
303     error_setg(errp, "failed to write to file '%s': %s", filename,
304                strerror(errno));
305     unlink(filename);
306     goto out;
307 }
308 
309 void qmp_screendump(const char *filename, Error **errp)
310 {
311     QemuConsole *con = qemu_console_lookup_by_index(0);
312     DisplaySurface *surface;
313 
314     if (con == NULL) {
315         error_setg(errp, "There is no QemuConsole I can screendump from.");
316         return;
317     }
318 
319     graphic_hw_update(con);
320     surface = qemu_console_surface(con);
321     ppm_save(filename, surface, errp);
322 }
323 
324 void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata)
325 {
326     if (!con) {
327         con = active_console;
328     }
329     if (con && con->hw_ops->text_update) {
330         con->hw_ops->text_update(con->hw, chardata);
331     }
332 }
333 
334 static void vga_fill_rect(QemuConsole *con,
335                           int posx, int posy, int width, int height,
336                           pixman_color_t color)
337 {
338     DisplaySurface *surface = qemu_console_surface(con);
339     pixman_rectangle16_t rect = {
340         .x = posx, .y = posy, .width = width, .height = height
341     };
342 
343     pixman_image_fill_rectangles(PIXMAN_OP_SRC, surface->image,
344                                  &color, 1, &rect);
345 }
346 
347 /* copy from (xs, ys) to (xd, yd) a rectangle of size (w, h) */
348 static void vga_bitblt(QemuConsole *con,
349                        int xs, int ys, int xd, int yd, int w, int h)
350 {
351     DisplaySurface *surface = qemu_console_surface(con);
352 
353     pixman_image_composite(PIXMAN_OP_SRC,
354                            surface->image, NULL, surface->image,
355                            xs, ys, 0, 0, xd, yd, w, h);
356 }
357 
358 /***********************************************************/
359 /* basic char display */
360 
361 #define FONT_HEIGHT 16
362 #define FONT_WIDTH 8
363 
364 #include "vgafont.h"
365 
366 #ifndef CONFIG_CURSES
367 enum color_names {
368     COLOR_BLACK   = 0,
369     COLOR_RED     = 1,
370     COLOR_GREEN   = 2,
371     COLOR_YELLOW  = 3,
372     COLOR_BLUE    = 4,
373     COLOR_MAGENTA = 5,
374     COLOR_CYAN    = 6,
375     COLOR_WHITE   = 7
376 };
377 #endif
378 
379 #define QEMU_RGB(r, g, b)                                               \
380     { .red = r << 8, .green = g << 8, .blue = b << 8, .alpha = 0xffff }
381 
382 static const pixman_color_t color_table_rgb[2][8] = {
383     {   /* dark */
384         QEMU_RGB(0x00, 0x00, 0x00),  /* black */
385         QEMU_RGB(0xaa, 0x00, 0x00),  /* red */
386         QEMU_RGB(0x00, 0xaa, 0x00),  /* green */
387         QEMU_RGB(0xaa, 0xaa, 0x00),  /* yellow */
388         QEMU_RGB(0x00, 0x00, 0xaa),  /* blue */
389         QEMU_RGB(0xaa, 0x00, 0xaa),  /* magenta */
390         QEMU_RGB(0x00, 0xaa, 0xaa),  /* cyan */
391         QEMU_RGB(0xaa, 0xaa, 0xaa),  /* white */
392     },
393     {   /* bright */
394         QEMU_RGB(0x00, 0x00, 0x00),  /* black */
395         QEMU_RGB(0xff, 0x00, 0x00),  /* red */
396         QEMU_RGB(0x00, 0xff, 0x00),  /* green */
397         QEMU_RGB(0xff, 0xff, 0x00),  /* yellow */
398         QEMU_RGB(0x00, 0x00, 0xff),  /* blue */
399         QEMU_RGB(0xff, 0x00, 0xff),  /* magenta */
400         QEMU_RGB(0x00, 0xff, 0xff),  /* cyan */
401         QEMU_RGB(0xff, 0xff, 0xff),  /* white */
402     }
403 };
404 
405 #ifdef DEBUG_CONSOLE
406 static void console_print_text_attributes(TextAttributes *t_attrib, char ch)
407 {
408     if (t_attrib->bold) {
409         printf("b");
410     } else {
411         printf(" ");
412     }
413     if (t_attrib->uline) {
414         printf("u");
415     } else {
416         printf(" ");
417     }
418     if (t_attrib->blink) {
419         printf("l");
420     } else {
421         printf(" ");
422     }
423     if (t_attrib->invers) {
424         printf("i");
425     } else {
426         printf(" ");
427     }
428     if (t_attrib->unvisible) {
429         printf("n");
430     } else {
431         printf(" ");
432     }
433 
434     printf(" fg: %d bg: %d ch:'%2X' '%c'\n", t_attrib->fgcol, t_attrib->bgcol, ch, ch);
435 }
436 #endif
437 
438 static void vga_putcharxy(QemuConsole *s, int x, int y, int ch,
439                           TextAttributes *t_attrib)
440 {
441     static pixman_image_t *glyphs[256];
442     DisplaySurface *surface = qemu_console_surface(s);
443     pixman_color_t fgcol, bgcol;
444 
445     if (t_attrib->invers) {
446         bgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
447         fgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
448     } else {
449         fgcol = color_table_rgb[t_attrib->bold][t_attrib->fgcol];
450         bgcol = color_table_rgb[t_attrib->bold][t_attrib->bgcol];
451     }
452 
453     if (!glyphs[ch]) {
454         glyphs[ch] = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, ch);
455     }
456     qemu_pixman_glyph_render(glyphs[ch], surface->image,
457                              &fgcol, &bgcol, x, y, FONT_WIDTH, FONT_HEIGHT);
458 }
459 
460 static void text_console_resize(QemuConsole *s)
461 {
462     TextCell *cells, *c, *c1;
463     int w1, x, y, last_width;
464 
465     last_width = s->width;
466     s->width = surface_width(s->surface) / FONT_WIDTH;
467     s->height = surface_height(s->surface) / FONT_HEIGHT;
468 
469     w1 = last_width;
470     if (s->width < w1)
471         w1 = s->width;
472 
473     cells = g_malloc(s->width * s->total_height * sizeof(TextCell));
474     for(y = 0; y < s->total_height; y++) {
475         c = &cells[y * s->width];
476         if (w1 > 0) {
477             c1 = &s->cells[y * last_width];
478             for(x = 0; x < w1; x++) {
479                 *c++ = *c1++;
480             }
481         }
482         for(x = w1; x < s->width; x++) {
483             c->ch = ' ';
484             c->t_attrib = s->t_attrib_default;
485             c++;
486         }
487     }
488     g_free(s->cells);
489     s->cells = cells;
490 }
491 
492 static inline void text_update_xy(QemuConsole *s, int x, int y)
493 {
494     s->text_x[0] = MIN(s->text_x[0], x);
495     s->text_x[1] = MAX(s->text_x[1], x);
496     s->text_y[0] = MIN(s->text_y[0], y);
497     s->text_y[1] = MAX(s->text_y[1], y);
498 }
499 
500 static void invalidate_xy(QemuConsole *s, int x, int y)
501 {
502     if (s->update_x0 > x * FONT_WIDTH)
503         s->update_x0 = x * FONT_WIDTH;
504     if (s->update_y0 > y * FONT_HEIGHT)
505         s->update_y0 = y * FONT_HEIGHT;
506     if (s->update_x1 < (x + 1) * FONT_WIDTH)
507         s->update_x1 = (x + 1) * FONT_WIDTH;
508     if (s->update_y1 < (y + 1) * FONT_HEIGHT)
509         s->update_y1 = (y + 1) * FONT_HEIGHT;
510 }
511 
512 static void update_xy(QemuConsole *s, int x, int y)
513 {
514     TextCell *c;
515     int y1, y2;
516 
517     if (!qemu_console_is_visible(s)) {
518         return;
519     }
520 
521     if (s->ds->have_text) {
522         text_update_xy(s, x, y);
523     }
524 
525     if (s->ds->have_gfx) {
526         y1 = (s->y_base + y) % s->total_height;
527         y2 = y1 - s->y_displayed;
528         if (y2 < 0)
529             y2 += s->total_height;
530         if (y2 < s->height) {
531             c = &s->cells[y1 * s->width + x];
532             vga_putcharxy(s, x, y2, c->ch,
533                           &(c->t_attrib));
534             invalidate_xy(s, x, y2);
535         }
536     }
537 }
538 
539 static void console_show_cursor(QemuConsole *s, int show)
540 {
541     TextCell *c;
542     int y, y1;
543     int x = s->x;
544 
545     if (!qemu_console_is_visible(s)) {
546         return;
547     }
548 
549     if (s->ds->have_text) {
550         s->cursor_invalidate = 1;
551     }
552 
553     if (s->ds->have_gfx) {
554         if (x >= s->width) {
555             x = s->width - 1;
556         }
557         y1 = (s->y_base + s->y) % s->total_height;
558         y = y1 - s->y_displayed;
559         if (y < 0)
560             y += s->total_height;
561         if (y < s->height) {
562             c = &s->cells[y1 * s->width + x];
563             if (show && s->cursor_visible_phase) {
564                 TextAttributes t_attrib = s->t_attrib_default;
565                 t_attrib.invers = !(t_attrib.invers); /* invert fg and bg */
566                 vga_putcharxy(s, x, y, c->ch, &t_attrib);
567             } else {
568                 vga_putcharxy(s, x, y, c->ch, &(c->t_attrib));
569             }
570             invalidate_xy(s, x, y);
571         }
572     }
573 }
574 
575 static void console_refresh(QemuConsole *s)
576 {
577     DisplaySurface *surface = qemu_console_surface(s);
578     TextCell *c;
579     int x, y, y1;
580 
581     if (!qemu_console_is_visible(s)) {
582         return;
583     }
584 
585     if (s->ds->have_text) {
586         s->text_x[0] = 0;
587         s->text_y[0] = 0;
588         s->text_x[1] = s->width - 1;
589         s->text_y[1] = s->height - 1;
590         s->cursor_invalidate = 1;
591     }
592 
593     if (s->ds->have_gfx) {
594         vga_fill_rect(s, 0, 0, surface_width(surface), surface_height(surface),
595                       color_table_rgb[0][COLOR_BLACK]);
596         y1 = s->y_displayed;
597         for (y = 0; y < s->height; y++) {
598             c = s->cells + y1 * s->width;
599             for (x = 0; x < s->width; x++) {
600                 vga_putcharxy(s, x, y, c->ch,
601                               &(c->t_attrib));
602                 c++;
603             }
604             if (++y1 == s->total_height) {
605                 y1 = 0;
606             }
607         }
608         console_show_cursor(s, 1);
609         dpy_gfx_update(s, 0, 0,
610                        surface_width(surface), surface_height(surface));
611     }
612 }
613 
614 static void console_scroll(QemuConsole *s, int ydelta)
615 {
616     int i, y1;
617 
618     if (ydelta > 0) {
619         for(i = 0; i < ydelta; i++) {
620             if (s->y_displayed == s->y_base)
621                 break;
622             if (++s->y_displayed == s->total_height)
623                 s->y_displayed = 0;
624         }
625     } else {
626         ydelta = -ydelta;
627         i = s->backscroll_height;
628         if (i > s->total_height - s->height)
629             i = s->total_height - s->height;
630         y1 = s->y_base - i;
631         if (y1 < 0)
632             y1 += s->total_height;
633         for(i = 0; i < ydelta; i++) {
634             if (s->y_displayed == y1)
635                 break;
636             if (--s->y_displayed < 0)
637                 s->y_displayed = s->total_height - 1;
638         }
639     }
640     console_refresh(s);
641 }
642 
643 static void console_put_lf(QemuConsole *s)
644 {
645     TextCell *c;
646     int x, y1;
647 
648     s->y++;
649     if (s->y >= s->height) {
650         s->y = s->height - 1;
651 
652         if (s->y_displayed == s->y_base) {
653             if (++s->y_displayed == s->total_height)
654                 s->y_displayed = 0;
655         }
656         if (++s->y_base == s->total_height)
657             s->y_base = 0;
658         if (s->backscroll_height < s->total_height)
659             s->backscroll_height++;
660         y1 = (s->y_base + s->height - 1) % s->total_height;
661         c = &s->cells[y1 * s->width];
662         for(x = 0; x < s->width; x++) {
663             c->ch = ' ';
664             c->t_attrib = s->t_attrib_default;
665             c++;
666         }
667         if (qemu_console_is_visible(s) && s->y_displayed == s->y_base) {
668             if (s->ds->have_text) {
669                 s->text_x[0] = 0;
670                 s->text_y[0] = 0;
671                 s->text_x[1] = s->width - 1;
672                 s->text_y[1] = s->height - 1;
673             }
674 
675             if (s->ds->have_gfx) {
676                 vga_bitblt(s, 0, FONT_HEIGHT, 0, 0,
677                            s->width * FONT_WIDTH,
678                            (s->height - 1) * FONT_HEIGHT);
679                 vga_fill_rect(s, 0, (s->height - 1) * FONT_HEIGHT,
680                               s->width * FONT_WIDTH, FONT_HEIGHT,
681                               color_table_rgb[0][s->t_attrib_default.bgcol]);
682                 s->update_x0 = 0;
683                 s->update_y0 = 0;
684                 s->update_x1 = s->width * FONT_WIDTH;
685                 s->update_y1 = s->height * FONT_HEIGHT;
686             }
687         }
688     }
689 }
690 
691 /* Set console attributes depending on the current escape codes.
692  * NOTE: I know this code is not very efficient (checking every color for it
693  * self) but it is more readable and better maintainable.
694  */
695 static void console_handle_escape(QemuConsole *s)
696 {
697     int i;
698 
699     for (i=0; i<s->nb_esc_params; i++) {
700         switch (s->esc_params[i]) {
701             case 0: /* reset all console attributes to default */
702                 s->t_attrib = s->t_attrib_default;
703                 break;
704             case 1:
705                 s->t_attrib.bold = 1;
706                 break;
707             case 4:
708                 s->t_attrib.uline = 1;
709                 break;
710             case 5:
711                 s->t_attrib.blink = 1;
712                 break;
713             case 7:
714                 s->t_attrib.invers = 1;
715                 break;
716             case 8:
717                 s->t_attrib.unvisible = 1;
718                 break;
719             case 22:
720                 s->t_attrib.bold = 0;
721                 break;
722             case 24:
723                 s->t_attrib.uline = 0;
724                 break;
725             case 25:
726                 s->t_attrib.blink = 0;
727                 break;
728             case 27:
729                 s->t_attrib.invers = 0;
730                 break;
731             case 28:
732                 s->t_attrib.unvisible = 0;
733                 break;
734             /* set foreground color */
735             case 30:
736                 s->t_attrib.fgcol=COLOR_BLACK;
737                 break;
738             case 31:
739                 s->t_attrib.fgcol=COLOR_RED;
740                 break;
741             case 32:
742                 s->t_attrib.fgcol=COLOR_GREEN;
743                 break;
744             case 33:
745                 s->t_attrib.fgcol=COLOR_YELLOW;
746                 break;
747             case 34:
748                 s->t_attrib.fgcol=COLOR_BLUE;
749                 break;
750             case 35:
751                 s->t_attrib.fgcol=COLOR_MAGENTA;
752                 break;
753             case 36:
754                 s->t_attrib.fgcol=COLOR_CYAN;
755                 break;
756             case 37:
757                 s->t_attrib.fgcol=COLOR_WHITE;
758                 break;
759             /* set background color */
760             case 40:
761                 s->t_attrib.bgcol=COLOR_BLACK;
762                 break;
763             case 41:
764                 s->t_attrib.bgcol=COLOR_RED;
765                 break;
766             case 42:
767                 s->t_attrib.bgcol=COLOR_GREEN;
768                 break;
769             case 43:
770                 s->t_attrib.bgcol=COLOR_YELLOW;
771                 break;
772             case 44:
773                 s->t_attrib.bgcol=COLOR_BLUE;
774                 break;
775             case 45:
776                 s->t_attrib.bgcol=COLOR_MAGENTA;
777                 break;
778             case 46:
779                 s->t_attrib.bgcol=COLOR_CYAN;
780                 break;
781             case 47:
782                 s->t_attrib.bgcol=COLOR_WHITE;
783                 break;
784         }
785     }
786 }
787 
788 static void console_clear_xy(QemuConsole *s, int x, int y)
789 {
790     int y1 = (s->y_base + y) % s->total_height;
791     TextCell *c = &s->cells[y1 * s->width + x];
792     c->ch = ' ';
793     c->t_attrib = s->t_attrib_default;
794     update_xy(s, x, y);
795 }
796 
797 /* set cursor, checking bounds */
798 static void set_cursor(QemuConsole *s, int x, int y)
799 {
800     if (x < 0) {
801         x = 0;
802     }
803     if (y < 0) {
804         y = 0;
805     }
806     if (y >= s->height) {
807         y = s->height - 1;
808     }
809     if (x >= s->width) {
810         x = s->width - 1;
811     }
812 
813     s->x = x;
814     s->y = y;
815 }
816 
817 static void console_putchar(QemuConsole *s, int ch)
818 {
819     TextCell *c;
820     int y1, i;
821     int x, y;
822 
823     switch(s->state) {
824     case TTY_STATE_NORM:
825         switch(ch) {
826         case '\r':  /* carriage return */
827             s->x = 0;
828             break;
829         case '\n':  /* newline */
830             console_put_lf(s);
831             break;
832         case '\b':  /* backspace */
833             if (s->x > 0)
834                 s->x--;
835             break;
836         case '\t':  /* tabspace */
837             if (s->x + (8 - (s->x % 8)) > s->width) {
838                 s->x = 0;
839                 console_put_lf(s);
840             } else {
841                 s->x = s->x + (8 - (s->x % 8));
842             }
843             break;
844         case '\a':  /* alert aka. bell */
845             /* TODO: has to be implemented */
846             break;
847         case 14:
848             /* SI (shift in), character set 0 (ignored) */
849             break;
850         case 15:
851             /* SO (shift out), character set 1 (ignored) */
852             break;
853         case 27:    /* esc (introducing an escape sequence) */
854             s->state = TTY_STATE_ESC;
855             break;
856         default:
857             if (s->x >= s->width) {
858                 /* line wrap */
859                 s->x = 0;
860                 console_put_lf(s);
861             }
862             y1 = (s->y_base + s->y) % s->total_height;
863             c = &s->cells[y1 * s->width + s->x];
864             c->ch = ch;
865             c->t_attrib = s->t_attrib;
866             update_xy(s, s->x, s->y);
867             s->x++;
868             break;
869         }
870         break;
871     case TTY_STATE_ESC: /* check if it is a terminal escape sequence */
872         if (ch == '[') {
873             for(i=0;i<MAX_ESC_PARAMS;i++)
874                 s->esc_params[i] = 0;
875             s->nb_esc_params = 0;
876             s->state = TTY_STATE_CSI;
877         } else {
878             s->state = TTY_STATE_NORM;
879         }
880         break;
881     case TTY_STATE_CSI: /* handle escape sequence parameters */
882         if (ch >= '0' && ch <= '9') {
883             if (s->nb_esc_params < MAX_ESC_PARAMS) {
884                 int *param = &s->esc_params[s->nb_esc_params];
885                 int digit = (ch - '0');
886 
887                 *param = (*param <= (INT_MAX - digit) / 10) ?
888                          *param * 10 + digit : INT_MAX;
889             }
890         } else {
891             if (s->nb_esc_params < MAX_ESC_PARAMS)
892                 s->nb_esc_params++;
893             if (ch == ';')
894                 break;
895 #ifdef DEBUG_CONSOLE
896             fprintf(stderr, "escape sequence CSI%d;%d%c, %d parameters\n",
897                     s->esc_params[0], s->esc_params[1], ch, s->nb_esc_params);
898 #endif
899             s->state = TTY_STATE_NORM;
900             switch(ch) {
901             case 'A':
902                 /* move cursor up */
903                 if (s->esc_params[0] == 0) {
904                     s->esc_params[0] = 1;
905                 }
906                 set_cursor(s, s->x, s->y - s->esc_params[0]);
907                 break;
908             case 'B':
909                 /* move cursor down */
910                 if (s->esc_params[0] == 0) {
911                     s->esc_params[0] = 1;
912                 }
913                 set_cursor(s, s->x, s->y + s->esc_params[0]);
914                 break;
915             case 'C':
916                 /* move cursor right */
917                 if (s->esc_params[0] == 0) {
918                     s->esc_params[0] = 1;
919                 }
920                 set_cursor(s, s->x + s->esc_params[0], s->y);
921                 break;
922             case 'D':
923                 /* move cursor left */
924                 if (s->esc_params[0] == 0) {
925                     s->esc_params[0] = 1;
926                 }
927                 set_cursor(s, s->x - s->esc_params[0], s->y);
928                 break;
929             case 'G':
930                 /* move cursor to column */
931                 set_cursor(s, s->esc_params[0] - 1, s->y);
932                 break;
933             case 'f':
934             case 'H':
935                 /* move cursor to row, column */
936                 set_cursor(s, s->esc_params[1] - 1, s->esc_params[0] - 1);
937                 break;
938             case 'J':
939                 switch (s->esc_params[0]) {
940                 case 0:
941                     /* clear to end of screen */
942                     for (y = s->y; y < s->height; y++) {
943                         for (x = 0; x < s->width; x++) {
944                             if (y == s->y && x < s->x) {
945                                 continue;
946                             }
947                             console_clear_xy(s, x, y);
948                         }
949                     }
950                     break;
951                 case 1:
952                     /* clear from beginning of screen */
953                     for (y = 0; y <= s->y; y++) {
954                         for (x = 0; x < s->width; x++) {
955                             if (y == s->y && x > s->x) {
956                                 break;
957                             }
958                             console_clear_xy(s, x, y);
959                         }
960                     }
961                     break;
962                 case 2:
963                     /* clear entire screen */
964                     for (y = 0; y <= s->height; y++) {
965                         for (x = 0; x < s->width; x++) {
966                             console_clear_xy(s, x, y);
967                         }
968                     }
969                     break;
970                 }
971                 break;
972             case 'K':
973                 switch (s->esc_params[0]) {
974                 case 0:
975                     /* clear to eol */
976                     for(x = s->x; x < s->width; x++) {
977                         console_clear_xy(s, x, s->y);
978                     }
979                     break;
980                 case 1:
981                     /* clear from beginning of line */
982                     for (x = 0; x <= s->x; x++) {
983                         console_clear_xy(s, x, s->y);
984                     }
985                     break;
986                 case 2:
987                     /* clear entire line */
988                     for(x = 0; x < s->width; x++) {
989                         console_clear_xy(s, x, s->y);
990                     }
991                     break;
992                 }
993                 break;
994             case 'm':
995                 console_handle_escape(s);
996                 break;
997             case 'n':
998                 /* report cursor position */
999                 /* TODO: send ESC[row;colR */
1000                 break;
1001             case 's':
1002                 /* save cursor position */
1003                 s->x_saved = s->x;
1004                 s->y_saved = s->y;
1005                 break;
1006             case 'u':
1007                 /* restore cursor position */
1008                 s->x = s->x_saved;
1009                 s->y = s->y_saved;
1010                 break;
1011             default:
1012 #ifdef DEBUG_CONSOLE
1013                 fprintf(stderr, "unhandled escape character '%c'\n", ch);
1014 #endif
1015                 break;
1016             }
1017             break;
1018         }
1019     }
1020 }
1021 
1022 void console_select(unsigned int index)
1023 {
1024     DisplayChangeListener *dcl;
1025     QemuConsole *s;
1026 
1027     if (index >= MAX_CONSOLES)
1028         return;
1029 
1030     trace_console_select(index);
1031     s = qemu_console_lookup_by_index(index);
1032     if (s) {
1033         DisplayState *ds = s->ds;
1034 
1035         if (active_console && active_console->cursor_timer) {
1036             qemu_del_timer(active_console->cursor_timer);
1037         }
1038         active_console = s;
1039         if (ds->have_gfx) {
1040             QLIST_FOREACH(dcl, &ds->listeners, next) {
1041                 if (dcl->con != NULL) {
1042                     continue;
1043                 }
1044                 if (dcl->ops->dpy_gfx_switch) {
1045                     dcl->ops->dpy_gfx_switch(dcl, s->surface);
1046                 }
1047             }
1048             dpy_gfx_update(s, 0, 0, surface_width(s->surface),
1049                            surface_height(s->surface));
1050         }
1051         if (ds->have_text) {
1052             dpy_text_resize(s, s->width, s->height);
1053         }
1054         if (s->cursor_timer) {
1055             qemu_mod_timer(s->cursor_timer,
1056                    qemu_get_clock_ms(rt_clock) + CONSOLE_CURSOR_PERIOD / 2);
1057         }
1058     }
1059 }
1060 
1061 static int console_puts(CharDriverState *chr, const uint8_t *buf, int len)
1062 {
1063     QemuConsole *s = chr->opaque;
1064     int i;
1065 
1066     s->update_x0 = s->width * FONT_WIDTH;
1067     s->update_y0 = s->height * FONT_HEIGHT;
1068     s->update_x1 = 0;
1069     s->update_y1 = 0;
1070     console_show_cursor(s, 0);
1071     for(i = 0; i < len; i++) {
1072         console_putchar(s, buf[i]);
1073     }
1074     console_show_cursor(s, 1);
1075     if (s->ds->have_gfx && s->update_x0 < s->update_x1) {
1076         dpy_gfx_update(s, s->update_x0, s->update_y0,
1077                        s->update_x1 - s->update_x0,
1078                        s->update_y1 - s->update_y0);
1079     }
1080     return len;
1081 }
1082 
1083 static void kbd_send_chars(void *opaque)
1084 {
1085     QemuConsole *s = opaque;
1086     int len;
1087     uint8_t buf[16];
1088 
1089     len = qemu_chr_be_can_write(s->chr);
1090     if (len > s->out_fifo.count)
1091         len = s->out_fifo.count;
1092     if (len > 0) {
1093         if (len > sizeof(buf))
1094             len = sizeof(buf);
1095         qemu_fifo_read(&s->out_fifo, buf, len);
1096         qemu_chr_be_write(s->chr, buf, len);
1097     }
1098     /* characters are pending: we send them a bit later (XXX:
1099        horrible, should change char device API) */
1100     if (s->out_fifo.count > 0) {
1101         qemu_mod_timer(s->kbd_timer, qemu_get_clock_ms(rt_clock) + 1);
1102     }
1103 }
1104 
1105 /* called when an ascii key is pressed */
1106 void kbd_put_keysym(int keysym)
1107 {
1108     QemuConsole *s;
1109     uint8_t buf[16], *q;
1110     int c;
1111 
1112     s = active_console;
1113     if (!s || (s->console_type == GRAPHIC_CONSOLE))
1114         return;
1115 
1116     switch(keysym) {
1117     case QEMU_KEY_CTRL_UP:
1118         console_scroll(s, -1);
1119         break;
1120     case QEMU_KEY_CTRL_DOWN:
1121         console_scroll(s, 1);
1122         break;
1123     case QEMU_KEY_CTRL_PAGEUP:
1124         console_scroll(s, -10);
1125         break;
1126     case QEMU_KEY_CTRL_PAGEDOWN:
1127         console_scroll(s, 10);
1128         break;
1129     default:
1130         /* convert the QEMU keysym to VT100 key string */
1131         q = buf;
1132         if (keysym >= 0xe100 && keysym <= 0xe11f) {
1133             *q++ = '\033';
1134             *q++ = '[';
1135             c = keysym - 0xe100;
1136             if (c >= 10)
1137                 *q++ = '0' + (c / 10);
1138             *q++ = '0' + (c % 10);
1139             *q++ = '~';
1140         } else if (keysym >= 0xe120 && keysym <= 0xe17f) {
1141             *q++ = '\033';
1142             *q++ = '[';
1143             *q++ = keysym & 0xff;
1144         } else if (s->echo && (keysym == '\r' || keysym == '\n')) {
1145             console_puts(s->chr, (const uint8_t *) "\r", 1);
1146             *q++ = '\n';
1147         } else {
1148             *q++ = keysym;
1149         }
1150         if (s->echo) {
1151             console_puts(s->chr, buf, q - buf);
1152         }
1153         if (s->chr->chr_read) {
1154             qemu_fifo_write(&s->out_fifo, buf, q - buf);
1155             kbd_send_chars(s);
1156         }
1157         break;
1158     }
1159 }
1160 
1161 static void text_console_invalidate(void *opaque)
1162 {
1163     QemuConsole *s = (QemuConsole *) opaque;
1164 
1165     if (s->ds->have_text && s->console_type == TEXT_CONSOLE) {
1166         text_console_resize(s);
1167     }
1168     console_refresh(s);
1169 }
1170 
1171 static void text_console_update(void *opaque, console_ch_t *chardata)
1172 {
1173     QemuConsole *s = (QemuConsole *) opaque;
1174     int i, j, src;
1175 
1176     if (s->text_x[0] <= s->text_x[1]) {
1177         src = (s->y_base + s->text_y[0]) * s->width;
1178         chardata += s->text_y[0] * s->width;
1179         for (i = s->text_y[0]; i <= s->text_y[1]; i ++)
1180             for (j = 0; j < s->width; j ++, src ++)
1181                 console_write_ch(chardata ++, s->cells[src].ch |
1182                                 (s->cells[src].t_attrib.fgcol << 12) |
1183                                 (s->cells[src].t_attrib.bgcol << 8) |
1184                                 (s->cells[src].t_attrib.bold << 21));
1185         dpy_text_update(s, s->text_x[0], s->text_y[0],
1186                         s->text_x[1] - s->text_x[0], i - s->text_y[0]);
1187         s->text_x[0] = s->width;
1188         s->text_y[0] = s->height;
1189         s->text_x[1] = 0;
1190         s->text_y[1] = 0;
1191     }
1192     if (s->cursor_invalidate) {
1193         dpy_text_cursor(s, s->x, s->y);
1194         s->cursor_invalidate = 0;
1195     }
1196 }
1197 
1198 static QemuConsole *new_console(DisplayState *ds, console_type_t console_type)
1199 {
1200     QemuConsole *s;
1201     int i;
1202 
1203     if (nb_consoles >= MAX_CONSOLES)
1204         return NULL;
1205     s = g_malloc0(sizeof(QemuConsole));
1206     if (!active_console || ((active_console->console_type != GRAPHIC_CONSOLE) &&
1207         (console_type == GRAPHIC_CONSOLE))) {
1208         active_console = s;
1209     }
1210     s->ds = ds;
1211     s->console_type = console_type;
1212     if (console_type != GRAPHIC_CONSOLE) {
1213         s->index = nb_consoles;
1214         consoles[nb_consoles++] = s;
1215     } else {
1216         /* HACK: Put graphical consoles before text consoles.  */
1217         for (i = nb_consoles; i > 0; i--) {
1218             if (consoles[i - 1]->console_type == GRAPHIC_CONSOLE)
1219                 break;
1220             consoles[i] = consoles[i - 1];
1221             consoles[i]->index = i;
1222         }
1223         s->index = i;
1224         consoles[i] = s;
1225         nb_consoles++;
1226     }
1227     return s;
1228 }
1229 
1230 static void qemu_alloc_display(DisplaySurface *surface, int width, int height,
1231                                int linesize, PixelFormat pf, int newflags)
1232 {
1233     surface->pf = pf;
1234 
1235     qemu_pixman_image_unref(surface->image);
1236     surface->image = NULL;
1237 
1238     surface->format = qemu_pixman_get_format(&pf);
1239     assert(surface->format != 0);
1240     surface->image = pixman_image_create_bits(surface->format,
1241                                               width, height,
1242                                               NULL, linesize);
1243     assert(surface->image != NULL);
1244 
1245     surface->flags = newflags | QEMU_ALLOCATED_FLAG;
1246 #ifdef HOST_WORDS_BIGENDIAN
1247     surface->flags |= QEMU_BIG_ENDIAN_FLAG;
1248 #endif
1249 }
1250 
1251 DisplaySurface *qemu_create_displaysurface(int width, int height)
1252 {
1253     DisplaySurface *surface = g_new0(DisplaySurface, 1);
1254     int linesize = width * 4;
1255 
1256     trace_displaysurface_create(surface, width, height);
1257     qemu_alloc_display(surface, width, height, linesize,
1258                        qemu_default_pixelformat(32), 0);
1259     return surface;
1260 }
1261 
1262 DisplaySurface *qemu_create_displaysurface_from(int width, int height, int bpp,
1263                                                 int linesize, uint8_t *data,
1264                                                 bool byteswap)
1265 {
1266     DisplaySurface *surface = g_new0(DisplaySurface, 1);
1267 
1268     trace_displaysurface_create_from(surface, width, height, bpp, byteswap);
1269     if (byteswap) {
1270         surface->pf = qemu_different_endianness_pixelformat(bpp);
1271     } else {
1272         surface->pf = qemu_default_pixelformat(bpp);
1273     }
1274 
1275     surface->format = qemu_pixman_get_format(&surface->pf);
1276     assert(surface->format != 0);
1277     surface->image = pixman_image_create_bits(surface->format,
1278                                               width, height,
1279                                               (void *)data, linesize);
1280     assert(surface->image != NULL);
1281 
1282 #ifdef HOST_WORDS_BIGENDIAN
1283     surface->flags = QEMU_BIG_ENDIAN_FLAG;
1284 #endif
1285 
1286     return surface;
1287 }
1288 
1289 void qemu_free_displaysurface(DisplaySurface *surface)
1290 {
1291     if (surface == NULL) {
1292         return;
1293     }
1294     trace_displaysurface_free(surface);
1295     qemu_pixman_image_unref(surface->image);
1296     g_free(surface);
1297 }
1298 
1299 void register_displaychangelistener(DisplayState *ds,
1300                                     DisplayChangeListener *dcl)
1301 {
1302     QemuConsole *con;
1303 
1304     trace_displaychangelistener_register(dcl, dcl->ops->dpy_name);
1305     dcl->ds = ds;
1306     QLIST_INSERT_HEAD(&ds->listeners, dcl, next);
1307     gui_setup_refresh(ds);
1308     if (dcl->con) {
1309         dcl->con->dcls++;
1310         con = dcl->con;
1311     } else {
1312         con = active_console;
1313     }
1314     if (dcl->ops->dpy_gfx_switch && con) {
1315         dcl->ops->dpy_gfx_switch(dcl, con->surface);
1316     }
1317 }
1318 
1319 void update_displaychangelistener(DisplayChangeListener *dcl,
1320                                   uint64_t interval)
1321 {
1322     DisplayState *ds = dcl->ds;
1323 
1324     dcl->update_interval = interval;
1325     if (!ds->refreshing && ds->update_interval > interval) {
1326         qemu_mod_timer(ds->gui_timer, ds->last_update + interval);
1327     }
1328 }
1329 
1330 void unregister_displaychangelistener(DisplayChangeListener *dcl)
1331 {
1332     DisplayState *ds = dcl->ds;
1333     trace_displaychangelistener_unregister(dcl, dcl->ops->dpy_name);
1334     if (dcl->con) {
1335         dcl->con->dcls--;
1336     }
1337     QLIST_REMOVE(dcl, next);
1338     gui_setup_refresh(ds);
1339 }
1340 
1341 void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h)
1342 {
1343     DisplayState *s = con->ds;
1344     DisplayChangeListener *dcl;
1345     int width = surface_width(con->surface);
1346     int height = surface_height(con->surface);
1347 
1348     x = MAX(x, 0);
1349     y = MAX(y, 0);
1350     x = MIN(x, width);
1351     y = MIN(y, height);
1352     w = MIN(w, width - x);
1353     h = MIN(h, height - y);
1354 
1355     if (!qemu_console_is_visible(con)) {
1356         return;
1357     }
1358     QLIST_FOREACH(dcl, &s->listeners, next) {
1359         if (con != (dcl->con ? dcl->con : active_console)) {
1360             continue;
1361         }
1362         if (dcl->ops->dpy_gfx_update) {
1363             dcl->ops->dpy_gfx_update(dcl, x, y, w, h);
1364         }
1365     }
1366 }
1367 
1368 void dpy_gfx_replace_surface(QemuConsole *con,
1369                              DisplaySurface *surface)
1370 {
1371     DisplayState *s = con->ds;
1372     DisplaySurface *old_surface = con->surface;
1373     DisplayChangeListener *dcl;
1374 
1375     con->surface = surface;
1376     QLIST_FOREACH(dcl, &s->listeners, next) {
1377         if (con != (dcl->con ? dcl->con : active_console)) {
1378             continue;
1379         }
1380         if (dcl->ops->dpy_gfx_switch) {
1381             dcl->ops->dpy_gfx_switch(dcl, surface);
1382         }
1383     }
1384     qemu_free_displaysurface(old_surface);
1385 }
1386 
1387 void dpy_refresh(DisplayState *s)
1388 {
1389     DisplayChangeListener *dcl;
1390 
1391     QLIST_FOREACH(dcl, &s->listeners, next) {
1392         if (dcl->ops->dpy_refresh) {
1393             dcl->ops->dpy_refresh(dcl);
1394         }
1395     }
1396 }
1397 
1398 void dpy_gfx_copy(QemuConsole *con, int src_x, int src_y,
1399                   int dst_x, int dst_y, int w, int h)
1400 {
1401     DisplayState *s = con->ds;
1402     DisplayChangeListener *dcl;
1403 
1404     if (!qemu_console_is_visible(con)) {
1405         return;
1406     }
1407     QLIST_FOREACH(dcl, &s->listeners, next) {
1408         if (con != (dcl->con ? dcl->con : active_console)) {
1409             continue;
1410         }
1411         if (dcl->ops->dpy_gfx_copy) {
1412             dcl->ops->dpy_gfx_copy(dcl, src_x, src_y, dst_x, dst_y, w, h);
1413         } else { /* TODO */
1414             dcl->ops->dpy_gfx_update(dcl, dst_x, dst_y, w, h);
1415         }
1416     }
1417 }
1418 
1419 void dpy_text_cursor(QemuConsole *con, int x, int y)
1420 {
1421     DisplayState *s = con->ds;
1422     DisplayChangeListener *dcl;
1423 
1424     if (!qemu_console_is_visible(con)) {
1425         return;
1426     }
1427     QLIST_FOREACH(dcl, &s->listeners, next) {
1428         if (con != (dcl->con ? dcl->con : active_console)) {
1429             continue;
1430         }
1431         if (dcl->ops->dpy_text_cursor) {
1432             dcl->ops->dpy_text_cursor(dcl, x, y);
1433         }
1434     }
1435 }
1436 
1437 void dpy_text_update(QemuConsole *con, int x, int y, int w, int h)
1438 {
1439     DisplayState *s = con->ds;
1440     DisplayChangeListener *dcl;
1441 
1442     if (!qemu_console_is_visible(con)) {
1443         return;
1444     }
1445     QLIST_FOREACH(dcl, &s->listeners, next) {
1446         if (con != (dcl->con ? dcl->con : active_console)) {
1447             continue;
1448         }
1449         if (dcl->ops->dpy_text_update) {
1450             dcl->ops->dpy_text_update(dcl, x, y, w, h);
1451         }
1452     }
1453 }
1454 
1455 void dpy_text_resize(QemuConsole *con, int w, int h)
1456 {
1457     DisplayState *s = con->ds;
1458     struct DisplayChangeListener *dcl;
1459 
1460     if (!qemu_console_is_visible(con)) {
1461         return;
1462     }
1463     QLIST_FOREACH(dcl, &s->listeners, next) {
1464         if (con != (dcl->con ? dcl->con : active_console)) {
1465             continue;
1466         }
1467         if (dcl->ops->dpy_text_resize) {
1468             dcl->ops->dpy_text_resize(dcl, w, h);
1469         }
1470     }
1471 }
1472 
1473 void dpy_mouse_set(QemuConsole *con, int x, int y, int on)
1474 {
1475     DisplayState *s = con->ds;
1476     DisplayChangeListener *dcl;
1477 
1478     if (!qemu_console_is_visible(con)) {
1479         return;
1480     }
1481     QLIST_FOREACH(dcl, &s->listeners, next) {
1482         if (con != (dcl->con ? dcl->con : active_console)) {
1483             continue;
1484         }
1485         if (dcl->ops->dpy_mouse_set) {
1486             dcl->ops->dpy_mouse_set(dcl, x, y, on);
1487         }
1488     }
1489 }
1490 
1491 void dpy_cursor_define(QemuConsole *con, QEMUCursor *cursor)
1492 {
1493     DisplayState *s = con->ds;
1494     DisplayChangeListener *dcl;
1495 
1496     if (!qemu_console_is_visible(con)) {
1497         return;
1498     }
1499     QLIST_FOREACH(dcl, &s->listeners, next) {
1500         if (con != (dcl->con ? dcl->con : active_console)) {
1501             continue;
1502         }
1503         if (dcl->ops->dpy_cursor_define) {
1504             dcl->ops->dpy_cursor_define(dcl, cursor);
1505         }
1506     }
1507 }
1508 
1509 bool dpy_cursor_define_supported(QemuConsole *con)
1510 {
1511     DisplayState *s = con->ds;
1512     DisplayChangeListener *dcl;
1513 
1514     QLIST_FOREACH(dcl, &s->listeners, next) {
1515         if (dcl->ops->dpy_cursor_define) {
1516             return true;
1517         }
1518     }
1519     return false;
1520 }
1521 
1522 /***********************************************************/
1523 /* register display */
1524 
1525 /* console.c internal use only */
1526 static DisplayState *get_alloc_displaystate(void)
1527 {
1528     if (!display_state) {
1529         display_state = g_new0(DisplayState, 1);
1530     }
1531     return display_state;
1532 }
1533 
1534 /*
1535  * Called by main(), after creating QemuConsoles
1536  * and before initializing ui (sdl/vnc/...).
1537  */
1538 DisplayState *init_displaystate(void)
1539 {
1540     int i;
1541 
1542     if (!display_state) {
1543         display_state = g_new0(DisplayState, 1);
1544     }
1545 
1546     for (i = 0; i < nb_consoles; i++) {
1547         if (consoles[i]->console_type != GRAPHIC_CONSOLE &&
1548             consoles[i]->ds == NULL) {
1549             text_console_do_init(consoles[i]->chr, display_state);
1550         }
1551     }
1552 
1553     return display_state;
1554 }
1555 
1556 QemuConsole *graphic_console_init(const GraphicHwOps *hw_ops,
1557                                   void *opaque)
1558 {
1559     int width = 640;
1560     int height = 480;
1561     QemuConsole *s;
1562     DisplayState *ds;
1563 
1564     ds = get_alloc_displaystate();
1565     trace_console_gfx_new();
1566     s = new_console(ds, GRAPHIC_CONSOLE);
1567     s->hw_ops = hw_ops;
1568     s->hw = opaque;
1569 
1570     s->surface = qemu_create_displaysurface(width, height);
1571     return s;
1572 }
1573 
1574 QemuConsole *qemu_console_lookup_by_index(unsigned int index)
1575 {
1576     if (index >= MAX_CONSOLES) {
1577         return NULL;
1578     }
1579     return consoles[index];
1580 }
1581 
1582 bool qemu_console_is_visible(QemuConsole *con)
1583 {
1584     return (con == active_console) || (con->dcls > 0);
1585 }
1586 
1587 bool qemu_console_is_graphic(QemuConsole *con)
1588 {
1589     if (con == NULL) {
1590         con = active_console;
1591     }
1592     return con && (con->console_type == GRAPHIC_CONSOLE);
1593 }
1594 
1595 bool qemu_console_is_fixedsize(QemuConsole *con)
1596 {
1597     if (con == NULL) {
1598         con = active_console;
1599     }
1600     return con && (con->console_type != TEXT_CONSOLE);
1601 }
1602 
1603 static void text_console_set_echo(CharDriverState *chr, bool echo)
1604 {
1605     QemuConsole *s = chr->opaque;
1606 
1607     s->echo = echo;
1608 }
1609 
1610 static void text_console_update_cursor(void *opaque)
1611 {
1612     QemuConsole *s = opaque;
1613 
1614     s->cursor_visible_phase = !s->cursor_visible_phase;
1615     graphic_hw_invalidate(s);
1616     qemu_mod_timer(s->cursor_timer,
1617                    qemu_get_clock_ms(rt_clock) + CONSOLE_CURSOR_PERIOD / 2);
1618 }
1619 
1620 static const GraphicHwOps text_console_ops = {
1621     .invalidate  = text_console_invalidate,
1622     .text_update = text_console_update,
1623 };
1624 
1625 static void text_console_do_init(CharDriverState *chr, DisplayState *ds)
1626 {
1627     QemuConsole *s;
1628     int g_width = 80 * FONT_WIDTH;
1629     int g_height = 24 * FONT_HEIGHT;
1630 
1631     s = chr->opaque;
1632 
1633     chr->chr_write = console_puts;
1634 
1635     s->out_fifo.buf = s->out_fifo_buf;
1636     s->out_fifo.buf_size = sizeof(s->out_fifo_buf);
1637     s->kbd_timer = qemu_new_timer_ms(rt_clock, kbd_send_chars, s);
1638     s->ds = ds;
1639 
1640     s->y_displayed = 0;
1641     s->y_base = 0;
1642     s->total_height = DEFAULT_BACKSCROLL;
1643     s->x = 0;
1644     s->y = 0;
1645     if (!s->surface) {
1646         if (active_console && active_console->surface) {
1647             g_width = surface_width(active_console->surface);
1648             g_height = surface_height(active_console->surface);
1649         }
1650         s->surface = qemu_create_displaysurface(g_width, g_height);
1651     }
1652 
1653     s->cursor_timer =
1654         qemu_new_timer_ms(rt_clock, text_console_update_cursor, s);
1655 
1656     s->hw_ops = &text_console_ops;
1657     s->hw = s;
1658 
1659     /* Set text attribute defaults */
1660     s->t_attrib_default.bold = 0;
1661     s->t_attrib_default.uline = 0;
1662     s->t_attrib_default.blink = 0;
1663     s->t_attrib_default.invers = 0;
1664     s->t_attrib_default.unvisible = 0;
1665     s->t_attrib_default.fgcol = COLOR_WHITE;
1666     s->t_attrib_default.bgcol = COLOR_BLACK;
1667     /* set current text attributes to default */
1668     s->t_attrib = s->t_attrib_default;
1669     text_console_resize(s);
1670 
1671     if (chr->label) {
1672         char msg[128];
1673         int len;
1674 
1675         s->t_attrib.bgcol = COLOR_BLUE;
1676         len = snprintf(msg, sizeof(msg), "%s console\r\n", chr->label);
1677         console_puts(chr, (uint8_t*)msg, len);
1678         s->t_attrib = s->t_attrib_default;
1679     }
1680 
1681     qemu_chr_be_generic_open(chr);
1682     if (chr->init)
1683         chr->init(chr);
1684 }
1685 
1686 static CharDriverState *text_console_init(ChardevVC *vc)
1687 {
1688     CharDriverState *chr;
1689     QemuConsole *s;
1690     unsigned width = 0;
1691     unsigned height = 0;
1692 
1693     chr = g_malloc0(sizeof(CharDriverState));
1694 
1695     if (vc->has_width) {
1696         width = vc->width;
1697     } else if (vc->has_cols) {
1698         width = vc->cols * FONT_WIDTH;
1699     }
1700 
1701     if (vc->has_height) {
1702         height = vc->height;
1703     } else if (vc->has_rows) {
1704         height = vc->rows * FONT_HEIGHT;
1705     }
1706 
1707     trace_console_txt_new(width, height);
1708     if (width == 0 || height == 0) {
1709         s = new_console(NULL, TEXT_CONSOLE);
1710     } else {
1711         s = new_console(NULL, TEXT_CONSOLE_FIXED_SIZE);
1712         s->surface = qemu_create_displaysurface(width, height);
1713     }
1714 
1715     if (!s) {
1716         g_free(chr);
1717         return NULL;
1718     }
1719 
1720     s->chr = chr;
1721     chr->opaque = s;
1722     chr->chr_set_echo = text_console_set_echo;
1723 
1724     if (display_state) {
1725         text_console_do_init(chr, display_state);
1726     }
1727     return chr;
1728 }
1729 
1730 static VcHandler *vc_handler = text_console_init;
1731 
1732 CharDriverState *vc_init(ChardevVC *vc)
1733 {
1734     return vc_handler(vc);
1735 }
1736 
1737 void register_vc_handler(VcHandler *handler)
1738 {
1739     vc_handler = handler;
1740 }
1741 
1742 void qemu_console_resize(QemuConsole *s, int width, int height)
1743 {
1744     DisplaySurface *surface;
1745 
1746     assert(s->console_type == GRAPHIC_CONSOLE);
1747     surface = qemu_create_displaysurface(width, height);
1748     dpy_gfx_replace_surface(s, surface);
1749 }
1750 
1751 void qemu_console_copy(QemuConsole *con, int src_x, int src_y,
1752                        int dst_x, int dst_y, int w, int h)
1753 {
1754     assert(con->console_type == GRAPHIC_CONSOLE);
1755     dpy_gfx_copy(con, src_x, src_y, dst_x, dst_y, w, h);
1756 }
1757 
1758 DisplaySurface *qemu_console_surface(QemuConsole *console)
1759 {
1760     return console->surface;
1761 }
1762 
1763 DisplayState *qemu_console_displaystate(QemuConsole *console)
1764 {
1765     return console->ds;
1766 }
1767 
1768 PixelFormat qemu_different_endianness_pixelformat(int bpp)
1769 {
1770     PixelFormat pf;
1771 
1772     memset(&pf, 0x00, sizeof(PixelFormat));
1773 
1774     pf.bits_per_pixel = bpp;
1775     pf.bytes_per_pixel = DIV_ROUND_UP(bpp, 8);
1776     pf.depth = bpp == 32 ? 24 : bpp;
1777 
1778     switch (bpp) {
1779         case 24:
1780             pf.rmask = 0x000000FF;
1781             pf.gmask = 0x0000FF00;
1782             pf.bmask = 0x00FF0000;
1783             pf.rmax = 255;
1784             pf.gmax = 255;
1785             pf.bmax = 255;
1786             pf.rshift = 0;
1787             pf.gshift = 8;
1788             pf.bshift = 16;
1789             pf.rbits = 8;
1790             pf.gbits = 8;
1791             pf.bbits = 8;
1792             break;
1793         case 32:
1794             pf.rmask = 0x0000FF00;
1795             pf.gmask = 0x00FF0000;
1796             pf.bmask = 0xFF000000;
1797             pf.amask = 0x00000000;
1798             pf.amax = 255;
1799             pf.rmax = 255;
1800             pf.gmax = 255;
1801             pf.bmax = 255;
1802             pf.ashift = 0;
1803             pf.rshift = 8;
1804             pf.gshift = 16;
1805             pf.bshift = 24;
1806             pf.rbits = 8;
1807             pf.gbits = 8;
1808             pf.bbits = 8;
1809             pf.abits = 8;
1810             break;
1811         default:
1812             break;
1813     }
1814     return pf;
1815 }
1816 
1817 PixelFormat qemu_default_pixelformat(int bpp)
1818 {
1819     PixelFormat pf;
1820 
1821     memset(&pf, 0x00, sizeof(PixelFormat));
1822 
1823     pf.bits_per_pixel = bpp;
1824     pf.bytes_per_pixel = DIV_ROUND_UP(bpp, 8);
1825     pf.depth = bpp == 32 ? 24 : bpp;
1826 
1827     switch (bpp) {
1828         case 15:
1829             pf.bits_per_pixel = 16;
1830             pf.rmask = 0x00007c00;
1831             pf.gmask = 0x000003E0;
1832             pf.bmask = 0x0000001F;
1833             pf.rmax = 31;
1834             pf.gmax = 31;
1835             pf.bmax = 31;
1836             pf.rshift = 10;
1837             pf.gshift = 5;
1838             pf.bshift = 0;
1839             pf.rbits = 5;
1840             pf.gbits = 5;
1841             pf.bbits = 5;
1842             break;
1843         case 16:
1844             pf.rmask = 0x0000F800;
1845             pf.gmask = 0x000007E0;
1846             pf.bmask = 0x0000001F;
1847             pf.rmax = 31;
1848             pf.gmax = 63;
1849             pf.bmax = 31;
1850             pf.rshift = 11;
1851             pf.gshift = 5;
1852             pf.bshift = 0;
1853             pf.rbits = 5;
1854             pf.gbits = 6;
1855             pf.bbits = 5;
1856             break;
1857         case 24:
1858             pf.rmask = 0x00FF0000;
1859             pf.gmask = 0x0000FF00;
1860             pf.bmask = 0x000000FF;
1861             pf.rmax = 255;
1862             pf.gmax = 255;
1863             pf.bmax = 255;
1864             pf.rshift = 16;
1865             pf.gshift = 8;
1866             pf.bshift = 0;
1867             pf.rbits = 8;
1868             pf.gbits = 8;
1869             pf.bbits = 8;
1870             break;
1871         case 32:
1872             pf.rmask = 0x00FF0000;
1873             pf.gmask = 0x0000FF00;
1874             pf.bmask = 0x000000FF;
1875             pf.rmax = 255;
1876             pf.gmax = 255;
1877             pf.bmax = 255;
1878             pf.rshift = 16;
1879             pf.gshift = 8;
1880             pf.bshift = 0;
1881             pf.rbits = 8;
1882             pf.gbits = 8;
1883             pf.bbits = 8;
1884             break;
1885         default:
1886             break;
1887     }
1888     return pf;
1889 }
1890 
1891 static void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend,
1892                               Error **errp)
1893 {
1894     int val;
1895 
1896     backend->vc = g_new0(ChardevVC, 1);
1897 
1898     val = qemu_opt_get_number(opts, "width", 0);
1899     if (val != 0) {
1900         backend->vc->has_width = true;
1901         backend->vc->width = val;
1902     }
1903 
1904     val = qemu_opt_get_number(opts, "height", 0);
1905     if (val != 0) {
1906         backend->vc->has_height = true;
1907         backend->vc->height = val;
1908     }
1909 
1910     val = qemu_opt_get_number(opts, "cols", 0);
1911     if (val != 0) {
1912         backend->vc->has_cols = true;
1913         backend->vc->cols = val;
1914     }
1915 
1916     val = qemu_opt_get_number(opts, "rows", 0);
1917     if (val != 0) {
1918         backend->vc->has_rows = true;
1919         backend->vc->rows = val;
1920     }
1921 }
1922 
1923 static void register_types(void)
1924 {
1925     register_char_driver_qapi("vc", CHARDEV_BACKEND_KIND_VC,
1926                               qemu_chr_parse_vc);
1927 }
1928 
1929 type_init(register_types);
1930